fix(h3d-carve-16): Toby r1 — F1 ternary, F2 dead DI, F3 naming guard, F4 smoke honesty

F1 (HIGH): Fix truncated-ternary in _bgLoadSettings — setZoomSmoothing and
setTiltSmoothing were closing before the ternary, storing the boolean
_bgHasStored(...) result instead of the camera-smoothing value. Move
closing ) to after : _cameraSmoothing. Add kill tests for both setters
asserting the argument contains '?'.

F2 (MED): Remove 13 dead DI params (5 lines) from createSceneInit signature
and matching entries from screen.js wiring:
  - FRET_WIRE_HIT_OP / HIT_INTENSITY / HIT_DECAY (renderer.js only)
  - updateStringHighlights (declared null, never called)
  - getIsDestroyed (screen.js lifecycle flag, not scene-init's concern)
  - setChartEnv/PrevT, setBcBeatIdx/NoteIdx/ChordIdx (BC chart-sync: per-frame)
  - setTintR/G/B (BC tint: per-frame, managed outside scene-init)
DI count repinned: 183 → 178.

F3 (LOW): Add naming-correspondence guard — for every getX in the DI,
assert a matching setX exists unless getX is in READ_ONLY (6 pinned
stable-ref getters that scene-init never writes).

F4 (honesty): Rename smoke test — was 'setters called before null-T throw'
(wrong: null canvas returns before T is accessed, no setter is called).
Now: 'factory construction + null-canvas early guard'.
Remove dead di stub entries (FRET_WIRE_HIT_*, getIsDestroyed,
updateStringHighlights) that no longer exist in the DI signature.

Suite: 427/427 (h3d glob).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014uZ169yfoFYArXz962g7KW

plugins/highway_3d/screen.js

@@ -4254,7 +4254,6 @@ import { createSceneInit } from './src/scene-init.js'; // h3d-carve-16
             SPARK_N: _SPARK_N,
             _ND_TTL_MS, _ND_TIME_EPS,
             FRET_WIRE_HIT_HEX, FRET_WIRE_HIT_EMISSIVE, FRET_WIRE_IDLE_HEX, FRET_WIRE_IDLE_OP,
-            FRET_WIRE_HIT_OP, FRET_WIRE_HIT_INTENSITY, FRET_WIRE_HIT_DECAY,
             ACCENT_RIM_BASE_EMISSIVE,
             ACCENT_HALO_OP_NEAR, ACCENT_HALO_OP_MID, ACCENT_HALO_OP_FAR,
             ACCENT_HALO_XY_INNER, ACCENT_HALO_XY_MID, ACCENT_HALO_XY_OUTER,
@@ -4277,7 +4276,6 @@ import { createSceneInit } from './src/scene-init.js'; // h3d-carve-16
             _darkenInt, _lightenInt, _h3dHexToInt,
             boardSpanX,
             _bcCreateController,
-            updateStringHighlights: null,
             canvasSize, applySize,
             fxInit,
             _disposeOpenStringPitchSprites,
@@ -4303,7 +4301,6 @@ import { createSceneInit } from './src/scene-init.js'; // h3d-carve-16
             getVibrancyProjOp: () => _vibrancyProjOp,
             getBgReactiveOptOut: () => _bgReactiveOptOut,
             getVenueSceneOverride: () => _venueSceneOverride,
-            getIsDestroyed: () => _destroyed,
             getVibrancy: () => vibrancy,
             // ── Getter+setter pairs ──────────────────────────────────────────
             getWrap: () => wrap, setWrap: (v) => { wrap = v; },
@@ -4347,11 +4344,6 @@ import { createSceneInit } from './src/scene-init.js'; // h3d-carve-16
             getStringLines: () => stringLines, setStringLines: (v) => { stringLines = v; },
             getProjMeshArr: () => projMeshArr, setProjMeshArr: (v) => { projMeshArr = v; },
             getBcCtrl: () => bcCtrl, setBcCtrl: (v) => { bcCtrl = v; },
-            setChartEnv: (v) => { _chartEnv = v; },
-            setChartPrevT: (v) => { _chartPrevT = v; },
-            setBcBeatIdx: (v) => { _bcBeatIdx = v; },
-            setBcNoteIdx: (v) => { _bcNoteIdx = v; },
-            setBcChordIdx: (v) => { _bcChordIdx = v; },
             getSparkPos: () => _sparkPos, setSparkPos: (v) => { _sparkPos = v; },
             getSparkCol: () => _sparkCol, setSparkCol: (v) => { _sparkCol = v; },
             setSparkVel: (v) => { _sparkVel = v; },
@@ -4505,9 +4497,6 @@ import { createSceneInit } from './src/scene-init.js'; // h3d-carve-16
             setSlideArrowApproachVisible: (v) => { slideArrowApproachVisible = v; },
             setSlideArrowNeckVisible: (v) => { slideArrowNeckVisible = v; },
             setSlideArrowChainPreviewVisible: (v) => { slideArrowChainPreviewVisible = v; },
-            setTintR: (v) => { _tintR = v; },
-            setTintG: (v) => { _tintG = v; },
-            setTintB: (v) => { _tintB = v; },
             setBoardStringStartX: (v) => { boardStringStartX = v; },
             setBoardTuningLabelX: (v) => { boardTuningLabelX = v; },
             getNdOnHit: () => _ndOnHit, setNdOnHit: (v) => { _ndOnHit = v; },

plugins/highway_3d/src/scene-init.js

@@ -26,7 +26,6 @@ export function createSceneInit({
     SPARK_N,
     _ND_TTL_MS, _ND_TIME_EPS,
     FRET_WIRE_HIT_HEX, FRET_WIRE_HIT_EMISSIVE, FRET_WIRE_IDLE_HEX, FRET_WIRE_IDLE_OP,
-    FRET_WIRE_HIT_OP, FRET_WIRE_HIT_INTENSITY, FRET_WIRE_HIT_DECAY,
     ACCENT_RIM_BASE_EMISSIVE,
     ACCENT_HALO_OP_NEAR, ACCENT_HALO_OP_MID, ACCENT_HALO_OP_FAR,
     ACCENT_HALO_XY_INNER, ACCENT_HALO_XY_MID, ACCENT_HALO_XY_OUTER,
@@ -49,7 +48,6 @@ export function createSceneInit({
     _darkenInt, _lightenInt, _h3dHexToInt,
     boardSpanX,
     _bcCreateController,
-    updateStringHighlights,
     canvasSize, applySize,
     fxInit,
     _disposeOpenStringPitchSprites,
@@ -73,7 +71,6 @@ export function createSceneInit({
     getVibrancyIdleOp, getVibrancyProjOp,
     getBgReactiveOptOut,
     getVenueSceneOverride,
-    getIsDestroyed,
     // ── Getter+setter pairs (written here; read by renderer.js / teardown etc.) ─
     getWrap, setWrap,
     getRen, setRen,
@@ -115,7 +112,6 @@ export function createSceneInit({
     getStringLines, setStringLines,
     getProjMeshArr, setProjMeshArr,
     getBcCtrl, setBcCtrl,
-    setChartEnv, setChartPrevT, setBcBeatIdx, setBcNoteIdx, setBcChordIdx,
     getSparkPos, setSparkPos,
     getSparkCol, setSparkCol,
     setSparkVel, setSparkLife, setSparkPts,
@@ -188,7 +184,6 @@ export function createSceneInit({
     setTuningLabelsVisible,
     setProjectionVisible,
     setSlideArrowApproachVisible, setSlideArrowNeckVisible, setSlideArrowChainPreviewVisible,
-    setTintR, setTintG, setTintB,
     setBoardStringStartX, setBoardTuningLabelX,
     getNdOnHit, setNdOnHit,
     getNdOnMiss, setNdOnMiss,
@@ -1827,12 +1822,12 @@ export function createSceneInit({
             // when the user has never explicitly written them. Once the user
             // moves either slider, the corresponding _bgHasStored() flips
             // true and the read becomes independent.
-            setZoomSmoothing(_bgHasStored(panelKey, 'zoomSmoothing'))
+            setZoomSmoothing(_bgHasStored(panelKey, 'zoomSmoothing')
                 ? _bgReadSetting(panelKey, 'zoomSmoothing')
-                : _cameraSmoothing;
-            setTiltSmoothing(_bgHasStored(panelKey, 'tiltSmoothing'))
+                : _cameraSmoothing);
+            setTiltSmoothing(_bgHasStored(panelKey, 'tiltSmoothing')
                 ? _bgReadSetting(panelKey, 'tiltSmoothing')
-                : _cameraSmoothing;
+                : _cameraSmoothing);
             setCameraLockLow(_bgReadSetting(panelKey, 'cameraLockLow'));
             setCameraLockZoom(_bgReadSetting(panelKey, 'cameraLockZoom'));
             setCameraMode(_bgReadSetting(panelKey, 'cameraMode'));